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Method of improving surface flame resistnace of substrate

a flame resistance and substrate technology, applied in the direction of coatings, chemical vapor deposition coatings, chemical apparatus and processes, etc., can solve the problems of limited flame resistance effect, time-consuming polymerization in this method, limited process temperature, etc., to improve the improve the surface flame resistance of the substrate, and save costs

Inactive Publication Date: 2008-05-08
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0010]Accordingly, the present invention is directed to a method of improving surface flame resistance of a substrate. In this method, a precursor free of halogen and phosphorous is used as a flame resistant agent to avoid environmental pollution. The flame resistance precursor used in this method is different from the conventional methods.
[0011]In order to achieve the above or other objectives, a method of improving the surface flame resistance of a substrate is provided. A substrate is provided. An atmosphere pressure plasma process is performed on the surface of the substrate to form an inorganic film layer on the surface of the substrate, wherein a process gas of the atmosphere plasma process includes a flame resistance precursor, a carrier gas, and a plasma ignition gas. Particularly, the flame resistance precursor is selected from a siloxane compound, an inorganic alkoxide compound and a combination thereof. The siloxane compound has a formula of Si(OCnH2(n+1))4, n=1˜5, and the inorganic alkoxide compound has a formula of A(OCmH2m+1)4, where A represents Sn, Ti, Zr, Ce and m=2.
[0013]In the present invention, an atmosphere pressure plasma process is adopted and a precursor free of halogen and phosphorous is used as a flame resistant agent to form an inorganic film layer on the substrate, thereby improving the flame resistance of a substrate. Therefore, without using high-temperature vacuum device and solvent contamination, the present invention is advantageous in cost saving and will not cause the problems such as environmental pollutions.

Problems solved by technology

However, the use of these kinds of chemicals is forbidden by Restriction of Hazardous Substance of European Union, so it has became a key issue of research and development that a precursor free of halogen and phosphorous is used as a flame resistant agent.
However, in this method, a twin-screw device is required to stir the mixture uniformly and the process temperature is limited.
However, in this method, an organic substance is used as a flame resistant agent, thus the flame resistance effect is limited.
However, the polymerization in this method is time-consuming and also a coating process is necessary to coat the resulting solid-liquid coexisting silica component onto the surface of the substrate, followed by a required high temperature baking process.
Therefore, this method consumes a long period of time and has complex steps.

Method used

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  • Method of improving surface flame resistnace of substrate

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Embodiment Construction

[0017]FIG. 1 is a flow chart of a method of improving surface flame resistance of a substrate according to an embodiment of the invention. Referring to FIG. 1, first, a substrate is selected (Step 102). The material of the substrate is, for example, a thermosetting plastic or a thermoplastic plastic. In an embodiment, the thermosetting plastic comprises epoxy resin or other thermosetting plastics. In another embodiment, the thermoplastic plastic comprises acrylonitrile-butadiene-styrene (ABS), polystyrene (PS), or other thermoplastic plastics. Since general plastic substrates have poor flame resistance, a flame retardant treatment must be performed on the substrate in order to improve the flame resistance. However, the method of the present invention is not limited to the plastic substrates only. The method of the present invention can also be applicable to other non-plastic substrates, as long as the substrate is in the need of the flame retardant treatment.

[0018]Subsequently, a fl...

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Abstract

A method of improving surface flame resistance of a substrate is provided. A substrate is provided. An atmosphere pressure plasma process is performed on the surface of the substrate to form an inorganic film layer on the surface of the substrate, wherein a process gas of the atmosphere plasma process includes a flame resistance precursor, a carrier gas, and a plasma ignition gas. Particularly, the flame resistance precursor is selected from a siloxane compound, an inorganic alkoxide compound and a combination thereof. The siloxane compound has a formula of Si(OCnH2(n+1))4, n=1˜5, and the inorganic alkoxide compound has a formula of A(OCmH2m+1)4, where A represents Sn, Ti, Zr, Ce and m=2.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 95133860, filed Sep. 13, 2006. All disclosure of the Taiwan application is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a method of improving surface flame resistance of a substrate. More particularly, the present invention relates to a method of improving surface flame resistance of a substrate by using an atmosphere pressure plasma process.[0004]2. Description of Related Art[0005]Since general plastic substrates have poor flame resistance, a flame retardant treatment must be performed on the substrate in order to improve the flame resistance. In current methods of the flame retardant treatment for the plastic substrate, a flame resistance agent containing halogen or nitrogen-phosphate is often used. However, the use of these kinds of chemicals is forbidden by Restriction of Haz...

Claims

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Application Information

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IPC IPC(8): B08B7/00
CPCC08J7/123C08J2325/06C23C16/513C23C16/40C08J2355/02
Inventor YEH, SHU-LINGKANG, CHIN-JIUH
Owner IND TECH RES INST
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